<template>
  <div class="container-big wing-blank">
    <div>Lorem ipsum dolor sit amet consectetur, adipisicing elit. Est, quidem?</div>
    <co-button @click.stop="submit" v-if="canGoback">返回</co-button>
  </div>
</template>
<script>
export default {
  methods: {
    submit() {
      this.$router.back()
    }
  },
  computed: {
    canGoback() {
      return window.history.length;
    }
  }
}
</script>
<style lang="less" scoped>

</style>

